Table 2 PTV and OAR dosimetry with hydrogel spacer
Organ | RTOG 0938 | Achieved Dose | ||
|---|---|---|---|---|
Parameters (Gy) | (mean±stdev) | |||
PTV | ||||
 Maximum point dose (1cc) | ≤ 38.78 | 38.1 | ± | 0.5 |
 Minimum dose received by 95% of PTV | ≥ 36.25 | 36.3 | ± | 0.4 |
Rectum | ||||
 Maximum point dose (1cc) | ≤ 38.06 | 33 | ± | 3.4 |
 Less than 3 cc | < 34.40 | 29.5 | ± | 4.0 |
 90% rectum | ≤ 32.63 | 25.0 | ± | 4.4 |
 80% rectum | ≤ 29.00 | 21.1 | ± | 4.7 |
 50% rectum | ≤ 18.13 | 13.5 | ± | 4.7 |
Bladder | ||||
 Maximum point dose (1cc) | ≤ 38.06 | 37 | ± | 0.4 |
 90% bladder | ≤ 32.63 | 22.9 | ± | 5.7 |
 50% bladder | ≤ 18.13 | 4.4 | ± | 3.5 |
Urethra | ≤ 38.78 | 38 | ± | 0.4 |